Finding the Fourth Proportional to 157,603,693.20, 235,767,810.60 and 138,471,817.20
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Solution
The fourth proportional to 157,603,693.20, 235,767,810.60 and 138,471,817.20 is: 207,147,412.02
Step by Step Solution
- Step 1: Write the proportion equation
157,603,693.20 : 235,767,810.60 = 138,471,817.20 : x - Step 2: Convert to fraction form
157,603,693.20/235,767,810.60 = 138,471,817.20/x - Step 3: Cross multiply
157,603,693.20x = 235,767,810.60 × 138,471,817.20 - Step 4: Simplify right side
157,603,693.20x = 32,647,197,171,047,420 - Step 5: Solve for x
x = 32,647,197,171,047,420/157,603,693.20 - Step 6: Final answer
x = 207,147,412.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.